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perf: memoize filetree computation (#490)

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* perf: memoize filetree computation

* format

* var -> let
This commit is contained in:
Jacky Zhao 2023-09-20 16:09:18 -07:00 committed by GitHub
parent 16d33fb771
commit 48452231d5
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1 changed files with 45 additions and 35 deletions
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80
quartz/components/Explorer.tsx
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@ -4,6 +4,7 @@ import explorerStyle from "./styles/explorer.scss"
// @ts-ignore
import script from "./scripts/explorer.inline"
import { ExplorerNode, FileNode, Options } from "./ExplorerNode"
import { QuartzPluginData } from "../plugins/vfile"
// Options interface defined in `ExplorerNode` to avoid circular dependency
const defaultOptions = {
@ -27,49 +28,58 @@ const defaultOptions = {
} satisfies Options
export default ((userOpts?: Partial<Options>) => {
function Explorer({ allFiles, displayClass, fileData }: QuartzComponentProps) {
// Parse config
const opts: Options = { ...defaultOptions, ...userOpts }
// Parse config
const opts: Options = { ...defaultOptions, ...userOpts }
// Construct tree from allFiles
const fileTree = new FileNode("")
allFiles.forEach((file) => fileTree.add(file, 1))
// memoized
let fileTree: FileNode
let jsonTree: string
/**
* Keys of this object must match corresponding function name of `FileNode`,
* while values must be the argument that will be passed to the function.
*
* e.g. entry for FileNode.sort: `sort: opts.sortFn` (value is sort function from options)
*/
const functions = {
map: opts.mapFn,
sort: opts.sortFn,
filter: opts.filterFn,
}
function constructFileTree(allFiles: QuartzPluginData[]) {
if (!fileTree) {
// Construct tree from allFiles
fileTree = new FileNode("")
allFiles.forEach((file) => fileTree.add(file, 1))
// Execute all functions (sort, filter, map) that were provided (if none were provided, only default "sort" is applied)
if (opts.order) {
// Order is important, use loop with index instead of order.map()
for (let i = 0; i < opts.order.length; i++) {
const functionName = opts.order[i]
if (functions[functionName]) {
// for every entry in order, call matching function in FileNode and pass matching argument
// e.g. i = 0; functionName = "filter"
// converted to: (if opts.filterFn) => fileTree.filter(opts.filterFn)
/**
* Keys of this object must match corresponding function name of `FileNode`,
* while values must be the argument that will be passed to the function.
*
* e.g. entry for FileNode.sort: `sort: opts.sortFn` (value is sort function from options)
*/
const functions = {
map: opts.mapFn,
sort: opts.sortFn,
filter: opts.filterFn,
}
// @ts-ignore
// typescript cant statically check these dynamic references, so manually make sure reference is valid and ignore warning
fileTree[functionName].call(fileTree, functions[functionName])
// Execute all functions (sort, filter, map) that were provided (if none were provided, only default "sort" is applied)
if (opts.order) {
// Order is important, use loop with index instead of order.map()
for (let i = 0; i < opts.order.length; i++) {
const functionName = opts.order[i]
if (functions[functionName]) {
// for every entry in order, call matching function in FileNode and pass matching argument
// e.g. i = 0; functionName = "filter"
// converted to: (if opts.filterFn) => fileTree.filter(opts.filterFn)
// @ts-ignore
// typescript cant statically check these dynamic references, so manually make sure reference is valid and ignore warning
fileTree[functionName].call(fileTree, functions[functionName])
}
}
}
// Get all folders of tree. Initialize with collapsed state
const folders = fileTree.getFolderPaths(opts.folderDefaultState === "collapsed")
// Stringify to pass json tree as data attribute ([data-tree])
jsonTree = JSON.stringify(folders)
}
}
// Get all folders of tree. Initialize with collapsed state
const folders = fileTree.getFolderPaths(opts.folderDefaultState === "collapsed")
// Stringify to pass json tree as data attribute ([data-tree])
const jsonTree = JSON.stringify(folders)
function Explorer({ allFiles, displayClass, fileData }: QuartzComponentProps) {
constructFileTree(allFiles)
return (
<div class={`explorer ${displayClass}`}>
<button